Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Keep proper pressure in your coolant system
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Keep proper pressure in your coolant system
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Install a brand new expansion tank with a new cap and hardware
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
2966326
Mfg#:
8D0121403LXKT
Ships in 3 Business Days
ON SALE!
$49.99
This product was last offered at the strikethrough price on 05-02-2026
Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Includes integrated coolant level sensor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Install new hardware with your new parts.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Ensure a proper seal on hose connections. 17x12
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Secures the expansion tank hose on both sides.
Keep proper pressure in your coolant system
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Brand:
ES#:
2535170
Mfg#:
1J0121321B
In Stock
$5.99
This product was last offered at the strikethrough price on 03-02-2026
Keep proper pressure in your coolant system
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4818658
Mfg#:
5Q0121321
Ships in 2 Business Days
ON SALE!
SAVE 24%
$15.99
This product was last offered at the strikethrough price on 05-02-2026
Install new hardware with your new parts. 4.8x19
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Secures the coolant expansion tank to the chassis.
Brand:
ES#:
467231
Mfg#:
N10003203
Ships in 3 Business Days
25% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$2.78
This product was last offered at the strikethrough price on 05-15-2026
Install a brand new expansion tank with a new cap and hardware
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
2580983
Mfg#:
8D0121403LKT1
Ships in 3 Business Days
ON SALE!
$49.99
This product was last offered at the strikethrough price on 05-02-2026
A common source of overheating problems is a broken or leaking coolant expansion tank. Replace it with an OEM coolant expansion tank or quality aftermarket expansion tank to prevent future woes.
Lifetime Replacement
